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Completed

NCT Number: NCT03893708

Investigating the Feasibility and Preliminary Effects of Yoga on Excessive Gestational Weight Gain

This study will test the feasibility (i.e., acceptability, demand) of a 12-week prenatal yoga intervention on excessive gestational weight gain (GWG) in pregnant women in the second trimester (enrolled at 12-24 weeks). Participants will be randomized into the prenatal yoga intervention or a pregnancy education (e.g., information on preparing for motherhood, labor and delivery etc.) control group. Participants in both groups will be asked to attend one 75 minute class per week.

The investigators hypothesize that prenatal yoga intervention will be feasible for pregnant women.

The study aims are as follows:

Primary Aim: Determine the feasibility (i.e., acceptability, demand) of a 12-week prenatal yoga intervention in pregnant women. In a randomized controlled pilot study comparing prenatal yoga to a pregnancy education control condition, the investigators will assess 1) acceptability (defined as satisfaction, intent to continue use, perceived appropriateness) and 2) demand (defined as attendance/adherence).

Exploratory Aim 1: Ascertain the preliminary effects of prenatal yoga on excessive GWG [i.e., weight gain exceeding Institute of Medicine (IOM) recommendations]. The investigators will compare weight change between intervention and control groups.

Exploratory Aim 2: Explore the potential mediators (i.e., mindfulness, self-regulation) on the effect of prenatal yoga on excessive GWG.

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Key information

Conditions

Weight Gain Body Weight Body Weight Changes Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

18 year–46 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Arizona Biomedical Collaborative (ASU), Phoenix, Arizona, United States

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Women 18-46 years of age (childbearing age)
  • Primiparous (women giving birth for the first time)
  • 12-24 weeks gestation at onset of intervention
  • Reside in the Phoenix Metropolitan area
  • Singleton pregnancy
  • English speaking
  • Not planning on moving before giving birth
  • Can attend at least one session per week

Exclusion criteria

  • Current alcohol or substance abuse
  • Engage in ≥150 min of physical activity
  • Participation in ≥30 minutes/week of yoga or contemplative practice (i.e., meditation, qigong) for the previous six months
  • Pre-pregnancy BMI ≥40 or <18.5
  • Denial of physical activity participation from a physician (PARmed-X for pregnancy)

Treatment and study plan

prenatal yoga

Behavioral

The prenatal yoga classes will be offered at Urban Wellness (2024 N. 7th St., Phoenix, AZ 85006). Classes will be offered Tuesdays's from 4:15-5:30 pm and Saturday's from 9:00-10:15 am. Participants will be able to attend both classes if they so choose but are only asked to attend 1/week. Participants will be asked to arrive to class at least 10 minutes early in order for the research team to collect their weight in a private room. Additionally, if participants have attended at least 70% of classes (1 per week for 8/12 weeks), participants will be able to attend sessions up until birth (beyond the 12-week intervention) if they so choose. If participants decide to attend classes beyond the 12-week intervention the investigators will continue to collect their weight at each session.

Pregnancy education

Behavioral

Pregnancy education classes will be offered at the Arizona Biomedical Collaborative Building on ASU Phoenix Campus. Classes will be offered on Tuesday's from 5:30-6:45 pm and Saturday's from 9:00-10:15 am. Participants will be able to attend both classes if they so choose but are only asked to attend 1/week. Participants will be asked to arrive to class at least 10 minutes early in order for the research team to collect their weight in a private room. Additionally, if participants have attended at least 70% of classes (1 per week for 8/12 weeks), participants will be able to attend sessions up until birth (beyond the 12-week intervention) if they so choose. If participants decide to attend classes beyond the 12-week intervention the investigators will continue to collect their weight at each session.

Primary outcomes

  1. Acceptability via satisfaction survey at post-intervention

    Time frame: post-intervention (12-weeks)

    Acceptability (defined as satisfaction, intent to continue use, perceived appropriateness); Benchmarks for acceptability include ≥70% of the sample will report the yoga intervention to be a satisfactory, useful, and appropriate modality to prevent excessive GWG.

  2. Demand (attendance/adherence) of yoga intervention

    Time frame: Weekly (during 12-week intervention)

    Demand was measured using attendance/adherence to the yoga intervention. Attendance was tracked by a researcher who was present at each yoga session. Benchmarks for demand include ≥60% of participants in each group will attend one class per week.

Secondary outcomes

  1. Number of participants with excessive GWG (total GWG from baseline to delivery)

    Time frame: Weekly (during 12-week intervention) and at delivery (up to 42 weeks gestation)

    Weight gain exceeding IOM recommendations

  2. Mindfulness (mean change from baseline)

    Time frame: Baseline, post-intervention (12-weeks)

    Self-report mindfulness scores via Mindful Attention Awareness Scale (MAAS); 15-item questionnaire with score ranges 1-6. Higher scores reflect higher levels of dispositional mindfulness.

  3. Self-awareness (mean change from baseline)

    Time frame: Baseline, post-intervention (12-weeks)

    Self-report self-awareness scores via Self-Awareness Outcomes Questionnaire (SAOQ); Consists of 38 items measuring 4 subscales (reflective self-development, acceptance, proactive at work, and emotional costs). Score ranges for each subscale are between 1-5. Higher scores represent a greater frequency of experienced outcomes.

  4. Emotion Regulation (mean change from baseline)

    Time frame: Baseline, post-intervention (12-weeks)

    Self-report emotion regulation scores via Emotional Regulation Questionnaire (ERQ); Consists of 10 items measuring 2 subscales (reappraisal items, suppression items). Score ranges for each subscale are between 1-7. The higher the scores, the greater the use of the emotional regulation strategy.

  5. Sleep Quality (mean change from baseline)

    Time frame: Baseline, post-intervention (12-weeks)

    Self-report sleep quality via Pittsburgh Sleep Quality Index (PSQI); Consists of 10-items. In scoring the PSQI, seven component scores are derived ranging from 0 (no difficulty) to 3 (severe difficulty). The component scores are summed to produce a global score (range 0 to 21). Higher scores indicate worse sleep quality.

Sponsors and collaborators

Lead sponsor

Arizona State University

Other

Collaborators

  • Kripalu Center for Yoga and Health

Registry information

Official study title

The Power of Yoga: Investigating the Feasibility and Preliminary Effects of Yoga on Excessive Gestational Weight Gain

Important dates

Study start
2018
Primary completion
2019
Study completion
2019
First posted
Mar 28, 2019
Registry last updated
Jan 7, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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